Cuffless Estimation of Systolic Blood Pressure for Short Effort Bicycle Tests: The Prominent Role of the Pre-Ejection Period

Muehlsteff, J.; Aubert, X.L.; Schuett, M.

doi:10.1109/iembs.2006.4398598

Cited by 12 publications

(24 citation statements)

References 7 publications

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“…During physical exercise we found in healthy and CHF patients good correlations of SBP vs. PAT with high subject-specific sensitivities [7] and very weak relation of SBP vs. PTT [8]. PEP has clearly a higher influence on PAT measurements than PTT [4,7].…”

Section: Experiences With Pulse Arrival Time Methodologymentioning

confidence: 70%

See 1 more Smart Citation

Experiences with Pulse Arrival Time as Surrogate for Systolic Blood Pressure

Muehlsteff

Kelm

Meyer

2013

Biomedical Engineering / Biomedizinische Technik

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Section: Experiences With Pulse Arrival Time Methodologymentioning

confidence: 70%

“…PEP has clearly a higher influence on PAT measurements than PTT [4,7]. A heuristic linear calibration function gave acceptable SBP estimations for healthy subjects (inter RMSE = 7.3 mmHg) and required only a single blood pressure measurement for calibration at rest [7].…”

Section: Experiences With Pulse Arrival Time Methodologymentioning

confidence: 95%

Experiences with Pulse Arrival Time as Surrogate for Systolic Blood Pressure

Muehlsteff

Kelm

Meyer

2013

Biomedical Engineering / Biomedizinische Technik

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“…The use of PTT is justified by the unobtrusiveness of its acquisition. PAT is better in isolating the effects of administration of different vasoactive drugs [31], and also when inducing physical stress in normal subjects [30]. In spite of this shortcoming, it is profitable to measure PTT using BCG and PPG, as it will not induce stress in the subject and it will still be possible to estimate SBP.…”

Section: A Cardiovascular Delaysmentioning

confidence: 99%

“…78 cm and 1060 kg/m 3 ). The PEP is the duration of electro-mechanical delay plus the isovolumetric ventricle contraction up to the aortic valve opening and it is a variable additive delay, which changes rapidly in response to stress, emotion and physical effort [30]. The use of PAT instead of PTT improves the correlation with systolic BP [31].…”

Section: A Cardiovascular Delaysmentioning

confidence: 99%

Non-Intrusive Device for Real-Time Circulatory System Assessment with Advanced Signal Processing Capabilities

Pinheiro¹,

Postolache²,

Girão³

2010

Measurement Science Review

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This paper presents a device that uses three cardiography signals to characterize several important parameters of a subject's circulatory system. Using electrocardiogram, finger photoplethysmogram, and ballistocardiogram, three heart rate estimates are acquired from beat-to-beat time interval extraction. Furthermore, pre-ejection period, pulse transit time (PTT), and pulse arrival time (PAT) are computed, and their long-term evolution is analyzed. The system estimates heart rate variability (HRV) and blood pressure variability (BPV) from the heart rate and PAT time series, to infer the activity of the cardiac autonomic system. The software component of the device evaluates the frequency content of HRV and BPV, and also their fractal dimension and entropy, thus providing a detailed analysis of the time series' regularity and complexity evolution, to allow personalized subject evaluation.

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“…This time measurement includes both PTT and part of the preejection period, which is the period from start of the depolarization of the heart, represented with the ECG-Q wave, to the aortic valve opening. Both the pre-ejection period and the PTT vary with blood pressure, and combining the two makes extraction of blood pressure values difficult [12]. Including the pre-ejection period also makes the measurements dependent on posture [13].…”

Section: Introductionmentioning

confidence: 99%

A Novel Method for Continuous, Noninvasive, Cuff-Less Measurement of Blood Pressure: Evaluation in Patients With Nonalcoholic Fatty Liver Disease

Seeberg

Orr

Opsahl

et al. 2017

IEEE Trans. Biomed. Eng.

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Abstract-Objective: One promising approach for a continuous, non-invasive, cuff-less ambulatory BP monitor is to measure the pulse wave velocity or the inversely proportional pulse transit time (PTT), based on electrical and optical physiological measurements in the chest area. A device termed IsenseU-BP+ has been developed for measuring continuous BP, as well as other physiological data. The objective of this paper is to present results from the first clinical evaluation with a wide range of patients. The study was set up to verify whether IsenseU-BP+ can be used to measure raw signals with sufficient quality to derive PTT. Methods: The test protocol, run 23 times on 18 different patients with non-alcoholic fatty liver disease, includes both supine measurement at rest as well as measurements during indoor cycling. Changes in PTT were compared with the BP changes measured using validated reference sensors. Results: IsenseU-BP+ measured signals with good quality during rest on 17 of 18 patients despite the high diversity in age, body shape and BMI. Evaluation during cycling was difficult due to a lack of good reference measurements. Conclusion: IsenseU-BP+ measures PTT with high quality during supine rest and exercise and could therefore be suitable for deriving non-invasive continuous BP, although evaluation during exercise was limited due to inaccurate reference BP measurements. Significance: Continuous, non-invasive measurement of BP would be highly beneficial in a number of clinical settings. Systems currently considered gold-standard for the investigation of hypertension carry considerable limitations which could be overcome by the method proposed here.Index Terms-cuff-less blood pressure, pulse transit time, pulse wave velocity, unobtrusive sensing, hypertension

show abstract

Cuffless Estimation of Systolic Blood Pressure for Short Effort Bicycle Tests: The Prominent Role of the Pre-Ejection Period

Cited by 12 publications

References 7 publications

Experiences with Pulse Arrival Time as Surrogate for Systolic Blood Pressure

Experiences with Pulse Arrival Time as Surrogate for Systolic Blood Pressure

Non-Intrusive Device for Real-Time Circulatory System Assessment with Advanced Signal Processing Capabilities

A Novel Method for Continuous, Noninvasive, Cuff-Less Measurement of Blood Pressure: Evaluation in Patients With Nonalcoholic Fatty Liver Disease

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